https://journalejmp.com/index.php/EJMP <p style="text-align: justify;"><strong>European Journal of Medicinal Plants (ISSN: 2231-0894)</strong> is dedicated to publish&nbsp;high quality papers (<a href="/index.php/EJMP/general-guideline-for-authors">Click here for Types of paper</a>)&nbsp;in all areas of medicinal plants research including plant growth and development, agronomic management, plant nutrition, plant physiology, cell biology, molecular biology, biotechnology, medicinal properties, phytochemical constituents, fitoterapia, pharmacognosy, essential oils, ehnopharmacology and phytomedicine. The journal also encourages the submission of useful reports of negative results. This is a quality controlled,&nbsp;OPEN&nbsp;peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US European Journal of Medicinal Plants 2231-0894 https://journalejmp.com/index.php/EJMP/article/view/30344 <p><strong>Aims:</strong> Study addressed the antioxidant activity (AA) of <em>Sabicea brasiliensis</em> roots crude extract (CE), ethyl acetate (EAF), and hydro-methanolic (HMF) fractions, and its impact on cell viability and adenine nucleotide hydrolysis in vascular A7r5 cells.</p> <p><strong>Materials and Methods:</strong> AA of CE, EAF and HMF were determined by the inhibition of the DPPH and ABTS radicals. Total phenolic content was evaluated by Folin-Ciocalteau. Cell viability was determined by MTT assay at different concentrations (62.5; 125; 250 and 500 μg·mL^-1) of EAF and HMF after 24, 48 and 72 h. Ectonucleotidase activities were evaluated by colorimetric methods after 48 h EAF or HMF treatment.</p> <p><strong>Results:</strong> The highest AA was observed for CE (76%), followed by EAF (46%) and HMF (23%). Phenolic content followed the same pattern. After 48 h, EAF increased A7r5 vascular cells viability by 40%, 40%, 62% and 25% at distinct concentrations, respectively; while HMF augmented it by 50% (500 μg·mL⁻¹). Finally, after 48 h EAF (500 μg·mL⁻¹) decreased about 50% of ATP and ADP metabolism while HMF inhibited 56 and 59% the hydrolysis of NPP substrate (at 125 and 250 μg·mL⁻¹).</p> <p><strong>Conclusion:</strong> Study confirmed the high AA of <em>S. brasiliensis</em>, which influences vascular cells proliferation and purines metabolism, pointing to potential cellular pathways that may support the popular use of this plant.</p> Douglas Souza Oliveira Mikaelle Costa Correia Bruna Juber de Araújo Fernanda Cardoso da Silva Paula Marynella Alves Pereira Lima Marcos de Souza Gomes Thaise Gonçalves de Araújo Cristina Ribas Fürstenau ##submission.copyrightStatement## 2020-12-31 2020-12-31 1 10 10.9734/ejmp/2020/v31i1930344